Dassault Systèmes SE

Capital/Financing Update • Jan 15, 2021

Half-year statement of the Liquidity contract entered into with Oddo BHF SCA

Vélizy-Villacoublay (France) – January 15, 2021 — Dassault Systèmes (Euronext Paris: #13065, DSY.PA), "The 3DEXPERIENCE Company", announces that the following resources appeared on December 31, 2020 on the liquidity contract entered into with Oddo BHF SCA implemented on January 7, 2015 and updated on June 18, 2019:

• 62,088 Dassault Systèmes shares, and
• € 19,212,711.09 in cash.

It is reminded that:

• 1. at the time of the implementation of the liquidity contract, the following resources appeared on the liquidity account:
• 0 Dassault Systèmes shares;
• € 10,000,000 in cash.
• 1. Pursuant to the amendment dated October 26, 2017, an additional contribution of € 5,000,000 was made, increasing from € 10,000,000 to € 15,000,000 the resources of the liquidity agreement.
• 1. Pursuant to the amendment dated December 13, 2018, an additional contribution of € 5,000,000 was made, increasing from € 15,000,000 to € 20,000,000 the resources of the liquidity agreement.
• 1. At the time of implementation of the new liquidity contract on June 18, 2019, the following resources appeared on the liquidity account:
• 62,557 Dassault Systèmes stocks, and;
• € 17,496,140.38 in cash.

From July 1, 2020 to December 31, 2020 the following transactions have been carried out:

• 4,777 purchases;
• 5,696 sales.

During the same period, the volume of securities traded, amounted to:

• 368,875 Dassault Systèmes stocks and € 57,170,317 purchases;
• 376,781 Dassault Systèmes stocks and € 58,952,460 sales.

About Dassault Systèmes

Dassault Systèmes, the 3DEXPERIENCE Company, is a catalyst for human progress. We provide business and people with collaborative 3D virtual environments to imagine sustainable innovations. By creating virtual experience twins of the real world with our 3DEXPERIENCE platform and applications, our customers push the boundaries of innovation, learning and production. Dassault Systèmes brings value to more than 270,000 customers of all sizes, in all industries, in more than 140 countries. For more information, visit www.3ds.com

3DEXPERIENCE, the Compass icon, the 3DS logo, CATIA, BIOVIA, GEOVIA, SOLIDWORKS, 3DVIA, ENOVIA, EXALEAD, NETVIBES, MEDIDATA, CENTRIC PLM, 3DEXCITE, SIMULIA, DELMIA, and IFWE are commercial trademarks or registered trademarks of Dassault Systèmes, a French "société européenne" (Versailles Commercial Register # 322 306 440), or its subsidiaries in the United States and/or other countries. All other trademarks are owned by their respective owners. Use of any Dassault Systèmes or its subsidiaries trademarks is subject to their express written approval.

Dassault Systèmes/Investors Relation François-José BORDONADO Béatrix MARTINEZ +33 (0)1 61 62 69 24

PURCHASES			SALES
Date	Transactions quantity	Securities quantity	Capital in EUR	Transactions quantity	Securities quantity	Capital in EUR
Total	4,777	368,875	57,170,317.30	5,696	376,781	58,952,460.70
01/07/2020	100	5,000	759,904.9	37	3,000	460,041.4
02/07/2020	142	8,000	1,220,779.2	48	3,000	460,800.0
03/07/2020	56	3,500	539,036.2	11	1,000	154,574.0
06/07/2020	00	00	00.0	143	7,000	1,089,025.0
07/07/2020	159	11,000	1,714,262.8	00	00	00.0
08/07/2020	08	500	77,502.5	29	2,000	311,880.0
09/07/2020	00	00	00.0	143	10,000	1,585,565.8
10/07/2020	17	2,000	313,300.0	144	5,000	788,950.0
13/07/2020	00	00	00.0	83	6,000	946,103.8
14/07/2020	57	6,000	919,650.0	00	00	00.0
15/07/2020	00	00	00.0	108	6,000	926,856.9
16/07/2020	49	4,000	607,950.4	66	4,000	612,100.0
17/07/2020	00	00	00.0	27	2,000	309,806.0
20/07/2020	00	00	00.0	51	4,500	712,150.0
21/07/2020	00	00	00.0	41	2,000	325,250.0
22/07/2020	61	4,000	638,300.0	00	00	00.0
23/07/2020	123	13,500	2,105,650.0	00	00	00.0
24/07/2020	74	9,000	1,344,191.3	00	00	00.0
27/07/2020	00	00	00.0	53	4,000	595,445.0
28/07/2020	27	2,000	298,700.0	57	4,000	601,359.5
29/07/2020	00	00	00.0	59	4,000	605,452.3
30/07/2020	42	4,000	609,166.3	00	00	00.0
31/07/2020	00	00	00.0	27	2,500	385,175.0
03/08/2020	10	1,000	153,150.0	29	2,500	389,175.0
04/08/2020	65	5,000	767,875.0	00	00	00.0
06/08/2020	29	2,500	377,125.0	12	1,000	152,950.0
07/08/2020	00	00	00.0	29	2,500	378,875.0
10/08/2020	80	7,000	1,051,275.0	11	1,000	151,000.0
11/08/2020	00	00	00.0	49	3,500	530,625.0
12/08/2020	00	00	00.0	22	2,500	381,275.0
13/08/2020	34	2,500	381,900.0	45	3,641	559,839.0
14/08/2020	107	10,000	1,513,625.0	14	2,000	303,350.0
17/08/2020	01	01	150.4	13	1,110	168,511.1
18/08/2020	13	2,001	302,751.9	13	1,501	229,426.9
19/08/2020	03	1,001	151,851.5	52	6,001	919,251.5
20/08/2020	40	3,501	526,876.2	01	01	151.2
21/08/2020	01	01	151.3	16	2,001	304,251.3
24/08/2020	00	00	00.0	37	8,200	1,274,475.8
25/08/2020	25	2,000	310,000.0	43	2,000	312,531.2

PURCHASES			SALES
Date	Transactions quantity	Securities quantity	Capital in EUR	Transactions quantity	Securities quantity	Capital in EUR
26/08/2020	35	2,500	389,125.0	68	5,000	785,000.0
27/08/2020	31	2,000	315,650.0	15	2,000	318,950.0
28/08/2020	56	6,000	945,025.0	72	2,000	316,514.8
31/08/2020	19	2,000	315,800.0	109	4,000	635,588.1
01/09/2020	02	2,000	318,000.0	45	8,000	1,281,800.0
02/09/2020	00	00	00.0	79	4,000	642,219.4
03/09/2020	136	11,500	1,826,800.0	00	00	00.0
04/09/2020	97	7,000	1,074,250.0	00	00	00.0
07/09/2020	00	00	00.0	79	7,000	1,081,500.0
08/09/2020	103	8,000	1,227,483.3	48	3,000	461,950.0
09/09/2020	00	00	00.0	87	5,000	775,338.0
10/09/2020	17	2,000	310,950.0	20	2,000	313,400.0
11/09/2020	77	3,000	469,921.9	00	00	00.0
14/09/2020	00	00	00.0	13	1,000	156,950.0
16/09/2020	00	00	00.0	162	9,000	1,437,582.4
17/09/2020	87	7,000	1,106,150.0	39	3,000	476,550.0
18/09/2020	00	00	00.0	147	8,000	1,281,500.0
21/09/2020	121	9,000	1,421,600.0	00	00	00.0
22/09/2020	07	1,000	157,550.0	71	7,000	1,120,500.0
23/09/2020	00	00	00.0	32	2,000	319,200.0
24/09/2020	137	8,000	1,250,300.0	62	6,000	941,026.7
25/09/2020	78	5,000	780,435.0	22	2,000	315,043.5
28/09/2020	00	00	00.0	50	3,000	480,107.2
29/09/2020	27	2,000	320,115.9	111	3,000	483,500.0
30/09/2020	72	4,000	638,892.5	00	00	00.0
01/10/2020	00	00	00.0	32	3,100	500,300.0
02/10/2020	116	8,000	1,271,800.0	00	00	00.0
05/10/2020	67	2,000	316,409.0	121	6,000	958,222.4
06/10/2020	110	8,090	1,281,333.0	00	00	00.0
07/10/2020	57	4,040	623,630.0	00	00	00.0
08/10/2020	25	1,000	155,990.6	70	4,160	656,825.5
09/10/2020	00	00	00.0	115	8,040	1,285,148.1
12/10/2020	00	00	00.0	23	2,192	355,376.8
13/10/2020	108	6,408	1,025,461.6	51	2,000	321,900.0
14/10/2020	35	4,000	641,900.0	27	2,000	323,500.0
15/10/2020	84	7,500	1,180,475.0	00	00	00.0
16/10/2020	06	1,500	237,750.0	140	7,500	1,196,416.4
19/10/2020	00	00	00.0	72	4,000	644,036.7
20/10/2020	90	6,000	949,100.0	00	00	00.0
21/10/2020	91	5,000	780,100.0	81	5,000	785,517.4
22/10/2020	59	11,000	1,658,500.0	85	5,000	760,700.0

PURCHASES			SALES
Date	Transactions quantity	Securities quantity	Capital in EUR	Transactions quantity	Securities quantity	Capital in EUR
23/10/2020	87	8,000	1,202,600.0	00	00	00.0
09/11/2020	35	2,000	307,550.0	91	9,000	1,411,335.4
10/11/2020	99	8,000	1,204,600.0	30	2,000	302,137.9
11/11/2020	00	00	00.0	160	15,000	2,275,755.5
12/11/2020	81	4,000	612,700.0	55	2,000	308,930.5
13/11/2020	33	4,000	608,400.0	14	1,000	153,300.0
16/11/2020	25	1,000	151,750.0	56	4,000	615,800.0
17/11/2020	79	7,000	1,061,900.0	00	00	00.0
18/11/2020	00	00	00.0	96	8,000	1,228,250.0
19/11/2020	66	4,000	620,300.0	40	5,000	779,700.0
20/11/2020	78	4,000	622,123.4	101	4,000	628,740.2
23/11/2020	232	15,000	2,345,195.1	00	00	00.0
24/11/2020	119	8,000	1,213,800.0	00	00	00.0
25/11/2020	00	00	00.0	51	6,000	912,800.0
26/11/2020	00	00	00.0	57	2,000	307,000.0
27/11/2020	28	1,000	153,550.0	45	2,000	309,550.0
30/11/2020	31	2,000	310,100.0	09	692	108,298.0
01/12/2020	50	7,000	1,078,400.0	71	4,000	623,650.0
02/12/2020	44	4,000	612,900.0	51	1,442	222,686.5
03/12/2020	25	2,200	335,130.0	29	1,283	197,389.6
04/12/2020	66	6,500	983,300.0	203	13,500	2,058,763.7
07/12/2020	14	1,000	152,750.0	113	4,000	615,200.0
08/12/2020	03	1,000	153,800.0	103	5,000	773,450.0
09/12/2020	60	4,551	703,378.5	109	2,000	310,600.0
10/12/2020	29	2,500	381,000.0	37	2,000	306,325.0
11/12/2020	00	00	00.0	18	1,000	154,550.0
14/12/2020	17	1,500	231,975.0	72	1,500	234,237.4
15/12/2020	21	906	141,064.2	116	8,700	1,365,338.1
16/12/2020	03	256	40,192.0	60	4,000	634,200.0
17/12/2020	00	00	00.0	25	2,000	320,100.0
18/12/2020	00	00	00.0	97	6,000	964,900.0
21/12/2020	82	6,000	953,658.7	00	00	00.0
22/12/2020	00	00	00.0	68	6,942	1,119,164.3
23/12/2020	00	00	00.0	04	2,000	329,700.0
24/12/2020	58	3,000	492,600.0	00	00	00.0
28/12/2020	00	00	00.0	46	5,250	870,125.0
29/12/2020	11	2,339	390,487.2	00	00	00.0
30/12/2020	00	00	00.0	08	1,025	172,097.5
31/12/2020	28	2,580	429,490.5	00	00	00.0